ASTROSAT CZTI

Data Quality Report

Orbit 29793

Creation date: 2024-06-27T20:07:49.151437
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_291T01_9000004278_29793cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29793cztM0_level2_quad_clean.evt
Size (bytes)1,440,270,720275,149,440
Size1.3 GB 262.4 MB
Events in quadrant A8,193,6031,864,076
Events in quadrant B14,202,9261,852,107
Events in quadrant C8,616,1571,769,111
Events in quadrant D11,473,9451,690,325

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349443
B0535603
C0358403
D0450213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168021360.809427%
B168036683.975481%
C168032671.589002%
D168036373.790990%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 19307 16805 9 9 0.05% 0.05%
B 19308 16806 216 216 1.12% 1.29%
C 19308 16806 4 4 0.02% 0.02%
D 19308 16806 549 549 2.84% 3.27%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 37786 85.69 2108 2069 416.8
A 13 254 33422 75.22 2108 2069 416.8
A 5 168 24835 54.62 2108 2069 416.8
B 6 159 4971288 12709.15 2082 2027 391.0
B 0 229 974605 2487.42 2082 2027 391.0
B 12 111 47268 115.71 2082 2027 391.0
C 14 238 339245 726.93 2016 2029 463.9
C 3 233 324148 694.38 2016 2029 463.9
C 10 22 46625 96.13 2016 2029 463.9
D 7 80 1723254 3719.77 1991 1942 462.7
D 8 195 1134948 2448.43 1991 1942 462.7
D 12 227 234365 502.27 1991 1942 462.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter